The collapse of a mass of earth or rock from a mountain or cliff
The sudden shaking of the earth for a short spell of time
Very rapid to extremely rapid surging flow of debris that has become partially or fully liquified
The falling of rocks freely from a cliff face
The correct option is B The sudden shaking of the earth for a short spell of time
An earthquake is a vibration of the Earth's surface that follows a release of energy in the Earth's crust. Sometimes, two lithospheric plates, instead of coming together or moving away, they simply slide past each other.